Home / 81,030.15-111,827.26-45,220.76

Finding the Fourth Proportional to 81,030.15, 111,827.26 and 45,220.76

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Solution

The fourth proportional to 81,030.15, 111,827.26 and 45,220.76 is: 62,407.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,030.15 : 111,827.26 = 45,220.76 : x
  2. Step 2: Convert to fraction form
    81,030.15/111,827.26 = 45,220.76/x
  3. Step 3: Cross multiply
    81,030.15x = 111,827.26 × 45,220.76
  4. Step 4: Simplify right side
    81,030.15x = 5,056,912,900.68
  5. Step 5: Solve for x
    x = 5,056,912,900.68/81,030.15
  6. Step 6: Final answer
    x = 62,407.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.